Misoprostol in the Intestinal Lumen Protects against Radiation Injury of the Mucosa of the Small Bowel

1994 ◽  
Vol 137 (3) ◽  
pp. 405 ◽  
Author(s):  
John P. Delaney ◽  
Margaret E. Bonsack ◽  
Isaac Felemovicius
Author(s):  
А.А. Коваленко ◽  
Г.П. Титова ◽  
В.К. Хугаева

Оперативное лечение различных заболеваний кишечника сопровождается осложнениями в виде нарушений микроциркуляции в области анастомоза кишки. Ранее нами показана способность лимфостимуляторов пептидной природы восстанавливать нарушенную микроциркуляцию, что послужило основой для настоящего исследования. Цель работы - оценка влияния стимуляции лимфотока в стенке кишки на процессы восстановления микроциркуляции, структуры и функции тонкой кишки в области оперативного вмешательства. Методика. В экспериментах на наркотизированных крысах (хлоралгидрат в дозе 0,6 г/кг в 0,9% растворе NaCl) моделировали различные поражения тонкой кишки (наложение лигатуры, перевязка 1-3 брыжеечных артерий, перекрут петли кишки вокруг оси брыжейки, сочетание нескольких видов повреждений). Резекция поврежденного участка через 1 сут. с последующим созданием тонкокишечного анастомоза завершалась орошением операционного поля раствором пептида-стимулятора лимфотока (40 мкг/кг массы животного в 1 мл 0,9% раствора NaCl). На 7-е сут. после операции проводили гистологическое исследование фрагмента кишки в области анастомоза. Результаты. На 7-е сут. после резекции у выживших животных (летальность вследствие кишечной непроходимости составляла 30%) имеют место морфологические признаки острых сосудистых нарушений стенки кишки, изменений кровеносных и лимфатических микрососудов, интерстициальный отек всех слоев стенки кишки, дилатация просвета кишки, повреждение всасывающего эпителия ворсин с истончением щеточной каемки клеток, морфологические признаки гиперфункции бокаловидных клеток. Использование лимфостимулятора пептидной природы после операции увеличивало выживаемость животных на 24%. У части животных отмечалось уменьшение расширения просвета кишки, у других практически полная его нормализация. Восстанавливалась форма кишечных ворсин и распределение бокаловидных клеток. Отсутствовали признаки внутриклеточного и межмышечного отека. Отмечено умеренное полнокровие венул. Заключение. Использование лимфостимулятора при хирургическом лечении кишечной непроходимости увеличивает выживаемость животных на 24% по сравнению с контролем, способствует более раннему восстановлению структуры и функции тонкой кишки. Полученные результаты свидетельствуют о перспективности использования стимуляции лимфотока при операциях на кишечнике. Surgical treatment of bowel diseases is associated with complications that cause microcirculatory disturbances in the anastomosis area and may lead to a fatal outcome. This study was based on our previous finding that peptide-type lymphatic stimulators are able to restore impaired microcirculation. The aim of this work was stimulating the lymph flow in the intestinal wall to facilitate recovery of microcirculation, structure and function of the small intestine in the area of surgical intervention. Methods. In experiments on anesthetized rats (0.6 g/kg chloral hydrate in 0.9% NaCl), various small bowel lesions were modeled (bowel ligation, ligation of 1-3 mesenteric arteries, gut torsion, combination of several lesion types). In 24 h, the damaged area was resected, and a small intestine anastomosis was creased. The surgery was completed with irrigation of the operative field with a solution of lymph flow stimulating peptide (40 мg/kg body weight in 1 ml of 0.9% NaCl). A gut fragment from the anastomosis area was examined histologically on day 7 after the surgery. Results. On the 7th day after removing the intestinal obstruction, the surviving animals (lethality 30%) had morphological signs of acute vascular disorders in the intestinal wall; changes in blood and lymphatic microvessels; interstitial edema of all intestinal wall layers; dilatation of the intestinal lumen; damage to the absorptive epithelium of villi with thinning of the brush border, and hyperfunction of mucous (goblet) cells. The use of the peptide after surgery increased the survival rate of animals by 24% and provided a smaller dilatation of the intestinal lumen in some animals. In other animals, the lumen recovered. The shape of intestinal villi and distribution of goblet cells were restored. Signs of intracellular and intermuscular edema were absent. Moderate venular congestion was noticed. Conclusion. Using the lymphatic stimulator in surgical treatment of intestinal obstruction increases the survival rate of animals by 24% compared to the control, facilitates earlier restoration of the small intestine structure and function. The obtained results indicated the effectiveness of lymphatic stimulation in intestinal surgery.


2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Saptarshi Biswas ◽  
Catherine Price ◽  
Sunil Abrol

Bullet embolism within the gastrointestinal system is extremely rare. Such bullet injuries are infrequently covered in the general literature, but the surgeon should be aware of the phenomenon. Smaller caliber bullets are more common in civilian gunshot wound (GSW) events. These bullets are able to tumble through the gastrointestinal tract and cause perforation of the intestinal lumen which is small enough to be easily missed. Bullets retained in the abdominal cavity should not be dismissed as fixed and should be carefully monitored to ensure that they do not embolize within the bowel and cause occult lesions during their migration. We present a unique case wherein a bullet caused a minute perforation in the small bowel, before migrating to the distal colon, which resulted in late presentation of sepsis secondary to peritonitis.


2008 ◽  
Vol 134 (4) ◽  
pp. A-575-A-576
Author(s):  
Kunzhong Zhang ◽  
Anju T. Nayar ◽  
Hengshan Zhang ◽  
Paul Okunieff ◽  
Lurong Zhang ◽  
...  
Keyword(s):  

2008 ◽  
Vol 41 (4) ◽  
pp. 464-468 ◽  
Author(s):  
Yuichiro Miyaki ◽  
Akihiro Yamaguchi ◽  
Masatoshi Isogai ◽  
Toru Harada ◽  
Yuji Kaneoka ◽  
...  

2005 ◽  
Vol 58 (7-8) ◽  
pp. 405-409
Author(s):  
Miroljub Draskovic ◽  
Sidor Misovic ◽  
Goran Kronja ◽  
Jovan Krsic ◽  
Aleksandar Tomic ◽  
...  

Introduction Intussusception is the invagionation of a segment of the intestine into itself. It is a serous condition that most commonly affects infants and children, but can also occur in adults. Intussusception in adults is usually caused by tumors, benign or malignant. Early diagnosis is essential to avoid treatment delays, which can increase morbidity and mortality. In older patients and adolescents the diagnosis can be complicated due to lower incidence and variable subacute symptoms. Case report We report a rare case of a 27-year-old patient with increasing abdominal discomfort over several weeks. The patient experienced increasing colics, recurrent vomiting, dehydration and weight loss. Finally he was transferred to the surgical ward of our hospital. Intussusception of the small bowel was diagnosed by CT examination. Laparotomy revealed a jejunojejunal intussusception caused by a small bowel tumor. Conclusion The tumor in the jejunum, almost completely obstructed the intestinal lumen and it was resected and bowel continuity was restored. Histopathological examination revealed a submucosal leiomyoma of the jejunum.


1994 ◽  
Vol 22 (4) ◽  
pp. 392S-392S ◽  
Author(s):  
YUKIO SAWADA ◽  
STEPHEN P PEREIRA ◽  
GERARD M MURPHY ◽  
R. HERMON DOWLING

1986 ◽  
Vol 29 (6) ◽  
pp. 371-373 ◽  
Author(s):  
Henrik Harling ◽  
Ib Balslev

1984 ◽  
Vol 58 (4) ◽  
pp. 313-320 ◽  
Author(s):  
S. M. Carroll ◽  
T. A. Robertson ◽  
J. M. Papadimitriou ◽  
D. I. Grove

ABSTRACTThe host-parasite interaction at the site of attachment of the adult hookworm,Ancylostoma ceylanicum, to the small bowel mucosa of the dog has been examined by transmission electron microscopy. The lamina propria around the heads of the worms showed intense infiltration with neutrophilic and cosinophilic leucocytes, and plasma cells were also prominent. Erythrocytcs were cxtravasatcd within the lamina propria while the portions of mucosa engulfed into the buccal cavities of the worms were nccrotic and included aggregates of collagen fibres. Within the lumina of the worms were erythrocytcs in varying stages of lysis together with other nccrotic debris.The mucous membrane adjacent to the heads of the worms was ulcerated while more distant cntcrocytcs were small, distorted and displayed various degrees of microvillar loss. Many mucosal blood vessels had platelet aggregates within their iumina but no fibrin deposition was observed. Vessels were often seen in the bases of the ulcers and were prone to rupture. Erythrocytcs and leucocytes were seen in the dog intestinal lumen in close proximity to the bodies of the worms.


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